Range command in multiple time frames

[8DTK8]

The example from the help file is great in a single time frame, but what's the syntax for getting the range in a multiple time frame strategy?

Help file says:
// Prints the 20 period simple moving average of range
double value = SMA(Range(), 20)[0];
Print("The 20 period average of range is " + value.ToString());

But what happens if you have 2 time frames and you want it to be in your primary? Where does the "0" go to tell it that you want the 20 period SMA for the range for the primary time period?

Many thanks in advance,

[8DTK8]

Another question

I found an old strategy that I wrote with:

ATR(Closes[0], 14)[0]

Which was being used, to the best of my knowledge, to calculate the ATR for the past 14 days. I understand that it needs a IDataSeries inputData, but doesn't the ATR calculation need closes, highs and lows?

If so, is what I have even calculating corretly?

Thanks again,

[NinjaTrader_Austin]

8DTK8, please continue working with Closes[0] (which is actually a DataSeries that contains the closes of all instruments associated with a strategy) and Range like you have in the second post:

// for a 20 period sma of the range of the primary bars
SMA(Range(Closes[0]), 20)[0];